Fradenburghs from Fortsville, NY

Looking for connections to the following Fradenburghs found at Griswold Cemetery, Rte 9,Saratoga Co., near Fortsville,NY: 1st stone: Sarah, wife of Walter Fradenburgh; Phebe, wife of Tobias Fradenburgh,Tobias Fradenburgh; Polly Knapp. 2nd stone: Abraham Fradenburgh;Peter Fradenburgh; 3rd stone: Antha Fradenburgh, Delia Murry;4th stone: Duane, son of Walter Fradenburgh.5th stone-can't read first name.Most died within a couple years of each other around 1858. According to will,land records, Tobias had 3 sons: Walter,Stephen, George.My connection is to George-would like info on the others.